<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
		#dv1{
			width: 200px;
			height: 200px;
			border: 1px solid red;
			overflow: auto;
		}
		#dv2{
			width:400px;
			height: 400px;
			border: 1px solid blue;
		}
		
		</style>
	</head>
	<body>
		<div id="dv1">
			<div id="dv2"></div>
		</div>
	</body>
</html>
